*{padding: 0;margin: 0;}
a,a:hover,a:focus{
    text-decoration: none;
}
h2,h3,div{padding: 0;margin: 0;}
ul,li{
    list-style: none;
    padding: 0;
    margin: 0;
}
body{
    font-family: "微软雅黑","苹方黑体";
}
.w{
    background: rgb(30,30,30);
}
.product-cases{
    /*margin:80px 0;*/
    float: right;
    clear: both;
    overflow: hidden;
}
.product-cases li{
    float: left;
    border-radius: 26px;
    margin:0 15px;
    color: #e7bc0e;
    border: 1px solid #e7bc0e;
    text-align: center;
    font-size: 16px;
}
.product-cases li a{
    color: #e7bc0e;
}
.product-cases li:hover{
    background: #e7bc0e;
}
.product-cases li:hover a{
    color: #ffffff;
}
/*.product-cases li.active{*/
    /*background: #e7bc0e;;*/
/*}*/
/*.product-cases li.active a{*/
    /*color: #ffffff;*/
/*}*/
.product-img{
    clear: both;
    overflow: hidden;
    margin-bottom: 70px;
     display:none;
}
.product-img li{
    position: relative;
    margin-bottom: 30px;
    overflow: hidden;
    float: left;
    /*width: 355px;*/
    height: 300px;
    /*margin-right: 24px;*/
    /*background: #000000;*/
}
.product-img li img{
    display: block;
    width:100%;
    height: 73%;
}
.product-img li span{
    /*width: 100%;*/
    /*height: 60px;*/
    line-height: 80px;
    text-align: center;
    background: #ffffff;
    color: #333333;
    font-size: 20px;
    display: block;

}
.product-img li:hover .tips-none{
    display: block;
}
.product-img .tips-none{
    /*width: 100%;*/
    height: 100%;
    padding: 25px;
    position: absolute;
    background: rgba(0,0,0,0.8);
    color: #ffffff;
    top:0;
    left:0;
     right: 0;
    bottom: 0;
    margin: 0 15px;
    z-index: 2;
    display: none;
}
.product-img .tips-none h3{
    color: #ff8e0e;
    margin-top: 155px;
    font-size: 24px;
    letter-spacing: 2px;
}
.product-img .tips-none p{
    margin-top: 22px;
    font-size: 16px;
    /*overflow: hidden;*/
    /*text-overflow: ellipsis;*/
    /*display: -webkit-box;*/
    /*-webkit-line-clamp: 3;*/
    /*-webkit-box-orient: vertical;*/
    /*white-space: normal;*/
}
footer{
    height: 40px;
    line-height: 40px;
    background: #191919;
    color: #495463;
    font-size: 14px;
    text-align: center;
}
@media (min-width:768px){
    .product-cases li{
        width: 100px;
        height: 35px;
        line-height: 35px;
    }
    .product-cases{
        margin:40px 0;
    }
}
@media (min-width: 1000px) {
    .product-cases li{
        width: 150px;
        height: 45px;
        line-height: 45px;
    }
    .product-cases{
        margin:80px 0;
    }
}
@media (max-width:768px){
    .product-cases{
        margin:20px 0;
    }
    .product-cases li{
        margin-bottom: 20px;
        font-size: 14px;
        height: 24px;
        line-height: 24px;
    }
}